Bottle-sealing cap.



C. l. LAWSON.

BOTTLE SEALING CAP, APPLICATION FILED nznxzs. 191s.

Patented Dec. 26, 1916 Application filed February 29, 1318.

is a specification, reference being had therein to the accompanying dra part thereof.

lvly invention relates to improvements in bottle sealing caps of the crown cap type and my objects are the production of a cap in which the union between the metal shell. and the sealing gasket will be reliable, the sealing gasket at the point of sealing will be more elastic and the waste in cutting the protective collet Will be eliminated.

I will now describe the embodiment of my invention illustrated in the accompanying drawings and will thereafter point out my invention in claims.

Figure l is a sectional View of my improved bottle sealing cap applied to a bottle.

'ings, forming Fig. 2 is a face View of the protective collct with dotted lines indicating the outer and inner circles of the bottle neck. Fig. 3 is a sectional View of my improved sealing cap prior to its application to a bottle. Bottle sealing caps of the type illustrated consist of three members, a metal shell 1 usually made of sheet tin, a protective collet 2, usually made of paper, and a sealing gasket 3 consisting either of a. solid cork dish, a composition cork dislc. or a rubber dis lhe collets heretofore used have been circular in shape and approximately of the size of the interior of the meta'i] shell. Owing" to the fact that these circu=ar shaped collets are punched out of strips of paper, there is necessarily a great deal of, Waste of material resulting from this circular shape. Furthermore, unless the circular collet is of the same or nearly the same diameter as the interior of the metal shell, it will not center. and the collet will not protect the contents of the bottle from contamination due to the leakage of liquid through the cork the metal shell.

I make my collet square and of a size such that the diagonal of the square approximates the inside diameter of the shell. Thus all Waste of material is eliminated in cutting the collet and the collet on being placed in the shell will he self-centering and gasket to S ecificaticu of Letters Patent.

LING CAI.

that portion of the shell comics 0 mouth of the bottle will he cove. collet. This Will be evident fro wherein the outer dotted circle 4: 2g the inside circumference of ti e shell as the outer circumference of and the inner dotted circle 5 inner circumference of the bottle HQCX.

l impregnate my collct, which prefer to make oi paper, although any other suitable substance may he used) W h a suitable adhesive, such as resin. This adhesive serves to attach the gasket to the shell so that; it

Will remain in place until the cap has been 7 applied to and sealed upon a bottle. The adhesion of the collet to the gasl-ict and the adhesion of the collct to the shell 1. he and preferably are Wholly relied upou for adhesiyely holding the parts of the cap together. The consequence is that the gasket has no adhesive applied to or in contact with it at those portions oi its surface \rhc' the collet is not in contact with it. The cork gasket is, as usual, treated with parafi'iu and 89 glycerin to make it pliable and impervious. This produces such a condition of plialiility that the cap may he applied to a bottle mouth after it has been asse-ui'ihlcd and made, Without any preliminary softening, such as is required in the insertion of ordinary corks. The pliahility of these paratfin treated gaskets is'iiupaircd by the use of an. adhesive but according to invention. this impairment of pliahility cannot sub-#3 stantially afi'ect the i'nargiual or sealing; tioos of s et.

It ma 1 her noted that in the pracart of making bottle sealing cups in some instances collets have been employed wherein the cellcl is non-adhesive or r mains non-adhcsiw until the pastem'ization of the scaled bottle. The holding of the, corlrgaslret "Within the shell before application and scalingof the cap is ctlectcd by a slight overhang ofthe crimps or corrugations of the shell. My invention may be embodied in bottle scaling caps thus made. with all the advantages of economy material and sclfrcutcriugz.

By making my collet square. I not on am cuahlcd to out the collets from a J paper Without any Waste it all, but tain a selfcnteri'ug collet and at the same time it leave the outer circumference of the gasket, Where it comes in contact with the bottleneck as flexible pliable ble. Another advantage in the use of my etis that the outer margin. of the gasket is free to move in any direction necessary to make the seal without first breaking the adhesion to the shell. The four segments outside the surface of the square coliet are the portions of this outer margin which are thus free to adjust themselves under the sealing pressure. The corners of the square collet can hardly be said to interrupt the continuity of this free outer margin of the gasket. For all practical purposes this outeir marginis free and yet these corners of the adhesive collet, wherein the gasket adhcsively held to the collet and the collet is adhesivcly held to the shell, supply'just sufficient marginal adhesiveness to assure that the parts of the unattached cap will hold together during transpoytation and storage, "while tun'iblingz about in the hopper of the capping machine and up to the time of the ap i lica-tion of the "pressure which unites them to'the bottle head. Under this sealing PTCGSSHLQ, the adhesiveness at the corners of the square collet ot' the outer margin of: the may be broken. in any event, the outer margin of the gasket is substantially free under the scaling 1'95- sure and a reliable tight sealing is as ured.

It is obvious that various modifications may he made a. the construction shown in the drawings and above particularly do: si'zribed Within the principle and scope of my invention.

1 claim:

1. A bottle sealing cap compiising a circular metal shell, a sealing gasket and a collet, the collet having two parallel sides which are located at the extremities of and are perpendicular to a line passing; through the center of the collct, such collet being interposed between the gasket and the shell and adapted to center in the shell.

A bottle sealing cap comprising a, circular metal shell, a sealinggasket and a collet having two sets of parallel sides, the sides of each being at right angles to the sides of the other set and the collet being. interposed between the gasket and the shell and adapted to center in the shell.

A bottle sealing cap comprising a circular metal sh'ell, a sealing gasket and a collet, the collet having {our corners sub stantially corresponding to the corners of a square and having a perimeter wherein the lines of two of the sides of the collet are counterparts respectively of the lines of the two opposite sides of the collet, such collet being interposed between the gasket and the shell and adapted to center in the shell.

4. A bottle sealing cap comprising a circu-laimetal shell, a. sealing gasket and. a

eashes enlist, the collct having four corners suhstantielly corresponding to the corners of a square and having a perimeter wherein the line of one side of the collet is a counterpart of the line of the opposite side of the collet, such collet being interposed between the gasket and the shell and adapted to center in the shell. Y

A. bottle sealing cap comprising a circular metal shell, a sealing gasket 'and a solute-shaped self-centering collet inter posed between the gasket and the shell.

6. A bottle sealing cap comprising a, circular metal shell, a sealing gasket and. an v adhesive collet having two parallel sides which are located at the extremities of and are perpendicular to aline passing through the center of the collet, such .collet being in- 'terp'osed oetween and adhering to the gasket and the shell, the gasket and the shell being adhesiveiy united only by the collet.

'7 A bottle sealing cap comprising a. circular metal shell, a sealing asket and an adhesive collet having two sets of parallel sides, the sides of each set beingat right angles to the sides of the other set, such collet being interposed between 5037191" mg to the and the shell, the gasket and the shell being adhesively united only by the collet.

S. A bottle sealing cap comprising circular metal shell, a. scaling gasket and an adhesive collet having four corners substantially corresponding to the corners of a square and having a perimeter wherein the lines of two of the sides of the collet are counter-pasts respectively of the lines of the two opposite sides of tl'ie-collet, such collet being; inte'iposed between and adhering to the gasket and the shell, the gasket and the shell heingz; adhesively united only by the c'ollet.

9. A bottle sealing cap comprising a circnlar metal shell, a sealing gasket and an adhesive collet having four comers substan tially corresponding to the corners of a square and having a perimeter wherein the line of one side of the collet is a counterpart of the line of the opposite side of the collet, such coilet being interposed-between and adhering to the gasket and the shell, the gasket and the shell being adhesively united only by the collet.

10. A bottle sealing cap comprising a circular metal shell, a sealing gasketand a square-shaped self-centrinf: adhesive 'collet interposed between and adhering to the gasketand the shell, the gasket and the shell being adhesively unite-(i only loy the collet.

Inltestimony whereof I have aiiixcd my signature. I

J. LAWSON. 

